Search Results - Gordon T. Richards

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  1. 1

    Examining Active Galactic Nucleus UV/Optical Variability beyond the Simple Damped Random Walk. II. Insights from 22 yr Observations of SDSS, PS1, and ZTF by Weixiang Yu, Gordon T. Richards, John J. Ruan, Michael S. Vogeley, Franz E. Bauer, Matthew J. Graham

    Published in The Astrophysical Journal (2025-01-01)
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  2. 2

    Exploring the Spectral Energy Distributions of Luminous Broad Absorption Line Quasars at High Redshift by Harum Ahmed, Sarah C. Gallagher, Ohad Shemmer, Michael S. Brotherton, Cooper Dix, Leigh Parrott, Gordon T. Richards

    Published in The Astrophysical Journal (2025-01-01)
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  3. 3

    The Physical Properties of Low-redshift FeLoBAL Quasars. IV. Optical–Near-IR Spectral Energy Distributions and Near-IR Variability Properties by Karen M. Leighly, Hyunseop Choi, Michael Eracleous, Donald M. Terndrup, Sarah C. Gallagher, Gordon T. Richards

    Published in The Astrophysical Journal (2024-01-01)
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  4. 4

    Investigating the Origin of the Absorption-line Variability in the Narrow-line Seyfert 1 Galaxy WPVS 007 by Kaylie S. Green, Sarah C. Gallagher, Karen M. Leighly, Hyunseop Choi, Dirk Grupe, Donald M. Terndrup, Gordon T. Richards, S. Komossa

    Published in The Astrophysical Journal (2023-01-01)
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  5. 5

    Gemini Near Infrared Spectrograph–Distant Quasar Survey: The Chandra View by Andrea Marlar, Ohad Shemmer, Michael S. Brotherton, Gordon T. Richards, Cooper Dix, Brandon M. Matthews, W. N. Brandt, R. M. Plotkin

    Published in The Astrophysical Journal (2025-01-01)
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  6. 6

    Balmer Absorption in Iron Low-ionization Broad Absorption Line Quasars by Karen M. Leighly, Sarah C. Gallagher, Hyunseop Choi, Donald M. Terndrup, Julianna R. Voelker, Gordon T. Richards, Leah K. Morabito

    Published in The Astrophysical Journal (2025-01-01)
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  7. 7

    Gemini Near Infrared Spectrograph–Distant Quasar Survey: Prescriptions for Calibrating UV-based Estimates of Supermassive Black Hole Masses in High-redshift Quasars by Cooper Dix, Brandon Matthews, Ohad Shemmer, Michael S. Brotherton, Adam D. Myers, I. Andruchow, W. N. Brandt, Gabriel A. Ferrero, Richard Green, Paulina Lira, Richard M. Plotkin, Gordon T. Richards, Donald P. Schneider

    Published in The Astrophysical Journal (2023-01-01)
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  8. 8

    The LSST AGN Data Challenge: Selection Methods by Đorđe V. Savić, Isidora Jankov, Weixiang Yu, Vincenzo Petrecca, Matthew J. Temple, Qingling Ni, Raphael Shirley, Andjelka B. Kovačević, Mladen Nikolić, Dragana Ilić, Luka Č. Popović, Maurizio Paolillo, Swayamtrupta Panda, Aleksandra Ćiprijanović, Gordon T. Richards

    Published in The Astrophysical Journal (2023-01-01)
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  9. 9

    Gemini Near Infrared Spectrograph−Distant Quasar Survey: Rest-frame Ultraviolet−Optical Spectral Properties of Broad Absorption Line Quasars by Harum Ahmed, Ohad Shemmer, Brandon Matthews, Cooper Dix, Trung Ha, Gordon T. Richards, Michael S. Brotherton, Adam D. Myers, W. N. Brandt, Sarah C. Gallagher, Richard Green, Paulina Lira, Jacob N. McLane, Richard M. Plotkin, Donald P. Schneider

    Published in The Astrophysical Journal (2024-01-01)
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  10. 10

    Gemini Near Infrared Spectrograph–Distant Quasar Survey: Augmented Spectroscopic Catalog and a Prescription for Correcting UV-based Quasar Redshifts by Brandon M. Matthews, Cooper Dix, Ohad Shemmer, Michael S. Brotherton, Adam D. Myers, I. Andruchow, W. N. Brandt, S. C. Gallagher, Richard Green, Paulina Lira, Jacob N. McLane, Richard M. Plotkin, Gordon T. Richards, Jessie C. Runnoe, Donald P. Schneider, Michael A. Strauss

    Published in The Astrophysical Journal (2023-01-01)
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  11. 11

    Shedding New Light on Weak Emission-line Quasars in the C iv–Hβ Parameter Space by Trung Ha, Cooper Dix, Brandon M. Matthews, Ohad Shemmer, Michael S. Brotherton, Adam D. Myers, Gordon T. Richards, Jaya Maithil, Scott F. Anderson, W. N. Brandt, Aleksandar M. Diamond-Stanic, Xiaohui Fan, S. C. Gallagher, Richard Green, Paulina Lira, Bin Luo, Hagai Netzer, Richard M. Plotkin, Jessie C. Runnoe, Donald P. Schneider, Michael A. Strauss, Benny Trakhtenbrot, Jianfeng Wu

    Published in The Astrophysical Journal (2023-01-01)
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